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Limited Contribution of Creatine Kinase-Myocardial Band Alongside High-Sensitivity Cardiac Troponin in Diagnosing Acute Myocardial Infarction in an Emergency Department.
Annals of Laboratory Medicine ( IF 4.0 ) Pub Date : 2024-06-24 , DOI: 10.3343/alm.2024.0083
Hyeyoung Lee 1 , Hyunhye Kang 2, 3 , Hyojin Chae 2, 3 , Eun-Jee Oh 2, 3
Affiliation  

Cardiac biomarkers, especially high-sensitivity cardiac troponin C or I (hs-cTnC or hs-cTnI, respectively), are vital for diagnosing acute myocardial infarction (AMI). Despite the specificity of hs-cTn as a biomarker, the creatine kinase-myocardial band (CK-MB) is commonly used alongside hs-cTn in emergency departments (EDs). We analyzed 23,771 simultaneous hs-cTn (hs-cTnT or hs-cTnI) and CK-MB requests for 17,185 patients in tertiary hospital ED in 2022. The objective of this study was to assess their practical value in diagnosing AMI in real-world settings. Among all 17,185 patients tested, 98.0% underwent hs-cTnT and CK-MB tests, and substantially fewer underwent hs-cTnI testing. We observed concordance between the initial hs-cTn and CK-MB results in 71.3% of patients. Of 131 AMI cases, 57 were positive for both biomarkers, 63 for hs-cTn only, and none for CK-MB alone. CK-MB positivity was often found in the absence of AMI. Discrepancies between the hs-cTnT and hs-cTnI results occurred in 30.0% of patients. Indiscriminate CK-MB testing for diagnosing AMI in EDs should be reconsidered. Efficient use of CK-MB is important for reducing costs and ensuring optimal patient care.

中文翻译:


肌酸激酶-心肌带与高敏心肌肌钙蛋白在急诊科诊断急性心肌梗死中的作用有限。



心脏生物标志物,尤其是高敏心肌肌钙蛋白 C 或 I (分别为 hs-cTnC 或 hs-cTnI),对于诊断急性心肌梗死 (AMI) 至关重要。尽管 hs-cTn 作为生物标志物具有特异性,但在急诊科 (ED) 中,肌酸激酶-心肌带 (CK-MB) 通常与 hs-cTn 一起使用。我们分析了 2022 年三级医院急诊科 17,185 名患者的 23,771 例同时发生的 hs-cTn (hs-cTnT 或 hs-cTnI) 和 CK-MB 请求。本研究的目的是评估它们在真实环境中诊断 AMI 的实用价值。在所有 17,185 名接受测试的患者中,98.0% 接受了 hs-cTnT 和 CK-MB 检测,接受 hs-cTnI 检测的患者要少得多。我们观察到 71.3% 的患者初始 hs-cTn 和 CK-MB 结果之间的一致性。在 131 例 AMI 病例中,57 例两种生物标志物均呈阳性,63 例仅 hs-cTn 阳性,仅 CK-MB 均无阳性。CK-MB 阳性通常在没有 AMI 的情况下被发现。hs-cTnT 和 hs-cTnI 结果之间的差异发生在 30.0% 的患者。应重新考虑不加区分地进行 CK-MB 检测以诊断急诊科的 AMI。有效使用 CK-MB 对于降低成本和确保最佳患者护理非常重要。
更新日期:2024-06-24
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